Portable fuel grate



March 24, 1925.

J. M. SHAW PORTABLE FUEL GRATE Filed March 21, 19.24 3 Sheets-Sheet l'atto: nu?

March 24. 1925. y1,530,791

J. h4. EHl\VV PORTABLE FUEL GRATB Filed March 21, 1924 3 Sheets-Sheet 2NW' "E March 24. 1025.

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UNITED STATES einem PATENT 'ori-fics.

SHAW, DALLAS, TEXAS, l A.SSIGi-IYDR, TO MOSHER STEEL & MACHINERYCOMPANY, OF DALLAS, TEXAS, A'CORPORATION' OF PORTABLE FUEL Gaarn-Application filed March 21, 1924. Serial No. 700,804.

To all whom may concern.:

Be it known that I, JAMns SHAW, a'

citizen of the United States of America, residing at Dallas, in thecounty'of Dallas and State of TeXas, have invented certain new anduseful Improvements in Portable Fuel Gratos, of which the following is aspeciiica' tion.

This invention relates to nenv andy useful improvements in portable fuelgrates and particularly for burning fuel in brick kilns. Y The object ofthe. invention is to provide a port-able grate for burning certainfuels, such as lignite coal and the like.; `and particularly a gratearranged so 'that the top ashes or combusted products'inaaf' be rakedfrom the bed of lire, without disturbing` the under side or lowerstratum ofsaid fire.

A further object is to provide a'portable fuel grate for burninghydrocarbon fuel of the character which requires the maintaining of anincandescent stratum contiguous to the grate bars in order to pro-moteeflicient combustion and to obtain a maximum heat.A

A particular object. is to provide a grate having guides or runnersabove Vthe bars for supporting` a slash bar or rake above the surface ofsaid bars, when the lire is raked tol remove the top ashes.

Another object is to provide a portable grate with a combination damperand drag leaf, which serves to prevent the escape of forced draftaireurrents from the inner end of the grate and also acts to drag outthe. fallen ashes when the grate is pulled from the flue or passageunder the kiln.

A construction designed to carry out the invention will be hereinafterdescribed, to-v gether with other features of the invent-ion.

The invention will be more readily understood fromV a reading of thefollowingV Fig. is a transverse sectional view on the line -7 of. Fig.1, and

Fig; 8 is a plan View of a modified form.

ln the drawings the numeral l() designates an elongated frame havingstandards 11 at each side arranged in pairs'and bifurcated so as toreceive the trunnions of wheels 12. At the left hand or rear end (Figs.1, 2 and 5) the frame has a pair of central standards 11 alsobifiiircated `to re-` ceive the trunnions of a Wheel l2. .fr shankllextendsfrom the front end ofthe frame anda tubular tongue 14C isfitted over and attached tothe vshank foil pulling the grate from thekiln liuc and pushing it. thereinto.

The upper surface of the frame, which forms the grate proper, is dividedinto panels by cross-bars 15 extending between andv flush with the sidebars of they frame. y These grate panels are foraminous` and may` beformed of longitudinal spaced bars v16 or they may be perforated as issho-wn in Fig.

8 at 17, or any other suitable foramino-us structure may-be employed. Y

In orderl toretain the fuel on the grate I provide side sections orguards 18 which have their 'ends bevelled-to t in dovetailed sockets 19formed on the side of the frame. An end section 2O is bevelled to fit insockets 21l on the rear ofthe frame. The sections 18 and 20 have uprightlingers 22 which are spaced apart and extend above the frame.

These fingers act as guards to prevent the fuel, such als lumps oflignite coal, from falling from` the grate, but permit the ashes todischarge therebetween and also allow a suiicient cross draft over thefire to promote combustion. Y i

In burning lignite and kindredfuels, the Y ashes must be removed fromthe topof the bed ofthe fire and to do this without disturbing theloweror incandescentstratiim, is difficult of accomplishment on theordinary grate. The disturbing or disintegia:

tion of the lower stratum is disastrous to the fire. One ofthefeaturesof this invention is to provide means for raking off the asheswithout disturbing or disintegrating the lower or incandescent stratum.y f

To accomplish this I provide a pair of elevated., transversely spacedguide bars or 7 rails 23 extending longitudinally Aof the grate from endto end thereof.V These rails extend sufficiently above the surface ofthe grate bars to support the blade 24 of a slash bar Q5, above thelower stratum of the bed of coals, when said bar is moved along saidVrails to rake the ashes from the fire. By this arrangement the ashes maybe quickly and freely removed Without fear of impairing the fire. j

Under the rear end of the frame` lO I hinge a transverse drag plate orleaf 26, which also acts as a damper when a lforced draft pipe 2'? issupported under the frame. The plate is slightly longer than thedistance from the frame to the fioor of the flue and it is heldv at aforward inclination by lugs 27. When the grate is pulled from the flue,the plate drags out the ashes.

Various changes in the size and shape of the different parts, as well asmodifications and alterations may7 be made Within the scope of theappended claims.

Vhat I claim, is:

l. In a fuel grate, the Combination of a frame having` draft openings,wheels for supporting said frame, guards at the sides of said frame, andmeans for supporting a raking implement above the surface of the grateto preserve the lower stratum of the fire When the top ashes areremoved.

2. In a fuel grate, the Combi-nation ofa frame having draft. openings,Wheels for supporting said frame, guards-at the sides of said frame,means for supporting aralr ing implement above the surface Aof the grateto preserve the lower stratum of the fire when the top ashes areremoved, and a drag plate under the frame.

3. Thev combination with the uppersurface of` a fuel grate for burninghydrocarguard sections mounted on the frame having upright spacedlingers extending above the` frame` said sections being detaehablvsupported on the sides of the frame.

6. In a portable fuel grate, a Wheel sup-Y ported frame having gratepanels, side guard sections mounted on the frame having upright spacedfingers extending above the frame, and an end section mounted on theframe. e Y e 7. In a portable fuel grate, a Wheel supported frame havinggrate panels, Y side guard sections mounted on the frame having; uprightspaced fingers extending above the frame, and an end seetion mounted onthe frame, said side and end sections being detfrxchablyk supported onthe frame..

8. Ina portable grate, the combination of aivlieel supported framehaving a grate surface, standards supporting the frame,

Wheels supporting the standards, side guards on the frame, yend guardson the frame, said guards having spaced portions extending above thegrate surface, and raking rails elevated above the grate surface.

In testimony whereof I affix my signature.

JAMES M. SHAW.

